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HTML
183 lines
9.0 KiB
HTML
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="abstract" content="An SQL statement can be placed anywhere a REXX command can be placed." />
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<meta name="description" content="An SQL statement can be placed anywhere a REXX command can be placed." />
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<title>Embed SQL statements in REXX applications</title>
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</head>
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<body id="rzajpembedsqlrexx"><a name="rzajpembedsqlrexx"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Embed SQL statements in REXX applications</h1>
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<div><p>An SQL statement can be placed anywhere a REXX command can be placed.</p>
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<div class="section"><p>Each SQL statement in a REXX procedure must begin with EXECSQL
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(in any combination of uppercase and lowercase letters), followed by either:</p>
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<ul><li>The SQL statement enclosed in single or double quotation marks, or</li>
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<li>A REXX variable containing the statement. Note that a colon must not precede
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a REXX variable when it contains an SQL statement.</li>
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</ul>
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</div>
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<div class="section"><p>For example:</p>
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<pre>EXECSQL “COMMIT”</pre>
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<p> is
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equivalent to:</p>
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<pre>rexxvar = “COMMIT”
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EXECSQL rexxvar</pre>
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</div>
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<div class="section"><p>The command follows normal REXX rules. For example, it can optionally
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be followed by a semicolon (;) to allow a single line to contain more than
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one REXX statement. REXX also permits command names to be included within
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single quotation marks, for example:</p>
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<pre>'EXECSQL COMMIT'</pre>
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</div>
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<div class="section"><p>The SQL/REXX interface supports the following SQL statements:</p>
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</div>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="void" border="1" rules="rows"><tbody><tr><td align="left" valign="top" width="54.699248120300744%"><p>ALTER SEQUENCE<br />
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ALTER TABLE<br />
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CALL <sup>2</sup><br />
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CLOSE<br />
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COMMENT ON<br />
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COMMIT<br />
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CREATE ALIAS<br />
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CREATE DISTINCT TYPE<br />
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CREATE FUNCTION<br />
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CREATE INDEX<br />
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CREATE PROCEDURE<br />
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CREATE SCHEMA<br />
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CREATE SEQUENCE<br />
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CREATE TABLE<br />
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CREATE TRIGGER<br />
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CREATE VIEW<br />
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DECLARE CURSOR <sup>2</sup><br />
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DECLARE GLOBAL TEMPORARY TABLE<br />
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DELETE <sup>2</sup><br />
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DESCRIBE<br />
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DESCRIBE TABLE<br />
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DROP</p>
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</td>
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<td align="left" valign="top" width="45.30075187969925%"><p>EXECUTE<br />
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EXECUTE IMMEDIATE<br />
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FETCH <sup>1</sup><br />
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GRANT<br />
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INSERT <sup>1</sup><br />
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LABEL ON<br />
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LOCK TABLE<br />
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OPEN<br />
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PREPARE<br />
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REFRESH<br />
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RELEASE SAVEPOINT<br />
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RENAME<br />
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REVOKE<br />
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ROLLBACK<br />
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SAVEPOINT<br />
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SET ENCRYPTION PASSWORD<br />
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SET OPTION <sup>3</sup><br />
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SET PATH<br />
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SET SCHEMA<br />
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SET TRANSACTION<br />
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SET variable <sup>2</sup><br />
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UPDATE <sup>2</sup><br />
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VALUES INTO <sup>2</sup></p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="section"><p>The following SQL statements are not supported by the SQL/REXX
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interface:</p>
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</div>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="void" border="1" rules="rows"><tbody><tr><td align="left" valign="top" width="50%"><p>ALLOCATE DESCRIPTOR<br />
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BEGIN DECLARE SECTION<br />
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CONNECT<br />
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DEALLOCATE DESCRIPTOR<br />
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DECLARE PROCEDURE<br />
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DECLARE STATEMENT<br />
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DECLARE VARIABLE<br />
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DESCRIBE INPUT<br />
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DISCONNECT<br />
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END DECLARE SECTION<br />
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FREE LOCATOR<br />
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GET DESCRIPTOR</p>
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</td>
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<td align="left" valign="top" width="50%"><p>GET DIAGNOSTICS<br />
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HOLD LOCATOR<br />
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INCLUDE<br />
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RELEASE<br />
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SELECT INTO<br />
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SET CONNECTION<br />
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SET CURRENT DEGREE<br />
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SET DESCRIPTOR<br />
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SET RESULT SETS<br />
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SET SESSION AUTHORIZATION<br />
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SIGNAL<br />
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WHENEVER<sup>1</sup></p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="section"><a name="fnsrc_1" href="#fntarg_1"><sup>1</sup></a><a name="fnsrc_2" href="#fntarg_2"><sup>2</sup></a><a name="fnsrc_3" href="#fntarg_3"><sup>3</sup></a></div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzajpcommentsrexx.htm">Comments in REXX applications that use SQL</a></strong><br />
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Neither SQL comments (--) nor REXX comments are allowed in strings representing SQL statements.</li>
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<li class="ulchildlink"><strong><a href="rzajpcontinuationrexx.htm">Continuation of SQL statements in REXX applications that use SQL</a></strong><br />
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The string containing an SQL statement can be split into several strings on several lines, separated by commas or concatenation operators, according to standard REXX usage.</li>
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<li class="ulchildlink"><strong><a href="rzajpincludecoderexx.htm">Include code in REXX applications that use SQL</a></strong><br />
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Unlike the other host languages, support is not provided for including externally defined statements.</li>
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<li class="ulchildlink"><strong><a href="rzajpmarginsrexx.htm">Margins in REXX applications that use SQL</a></strong><br />
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There are no special margin rules for the SQL/REXX interface.</li>
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<li class="ulchildlink"><strong><a href="rzajpnamesrexx.htm">Names in REXX applications that use SQL</a></strong><br />
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Any valid REXX name not ending in a period (.) can be used for a host variable. The name must be 64 characters or less.</li>
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<li class="ulchildlink"><strong><a href="rzajpnullsrexx.htm">Nulls in REXX applications that use SQL</a></strong><br />
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Although the term <em>null</em> is used in both REXX and SQL, the
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term has different meanings in the two languages.</li>
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<li class="ulchildlink"><strong><a href="rzajpstmtlabelsrexx.htm">Statement labels in REXX applications that use SQL</a></strong><br />
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REXX command statements can be labeled as usual.</li>
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<li class="ulchildlink"><strong><a href="rzajprxerr.htm">Handle errors and warnings in REXX applications that use SQL</a></strong><br />
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The WHENEVER statement is not supported by the SQL/REXX interface. You can use one of several substitutes, however.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzajprexx.htm" title="REXX procedures do not have to be preprocessed. At run time, the REXX interpreter passes statements that it does not understand to the current active command environment for processing.">Code SQL statements in REXX applications</a></div>
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</div>
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</div><div class="p"><a name="fntarg_1" href="#fnsrc_1"><sup>1</sup></a> The blocked form of this statement is not supported.</div><div class="p"><a name="fntarg_2" href="#fnsrc_2"><sup>2</sup></a> These
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statements cannot be run directly if they contain host variables; they must
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be the object of a PREPARE and then an EXECUTE.</div><div class="p"><a name="fntarg_3" href="#fnsrc_3"><sup>3</sup></a> The SET OPTION statement
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can be used in a REXX procedure to change some of the processing options used
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for running SQL statements. These options include the commitment control level
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and date format. See the <a href="../db2/rbafzmst02.htm">SQL Reference</a> topic for more information about the <a href="../db2/rbafzmstsoption.htm">SET OPTION</a> statement.</div>
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</body>
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</html>
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